diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index cc8a9be7..67bf3d4e 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -9,11 +9,15 @@ Change Log
 4.0.1
 =====
 
+`PR 174: remove pdb <https://github.com/4dn-dcic/Submit4DN/pull/174>`_
+
 * remove stray pdb that got left in and hung file upload
 
 4.0.0
 =====
 
+`PR 173: update python versions <https://github.com/4dn-dcic/Submit4DN/pull/173>`_
+
 * update to use python versions 3.8 - 3.11
 
 3.4.2